阅读说明：本技术 一种干式气柜的施工方法 (Construction method of dry type gas holder ) 是由 何成荣 娄战士 张永昌 于 2020-06-13 设计创作，主要内容包括：本申请提供了一种干式气柜的施工方法,涉及气体储存技术领域。施工方法包括：第一步,找出基础中心点。第二步,铺设底板。第三步,在底板上安装活塞板、活塞支柱和活塞围环。第四步,在活塞围环内进行浇筑。第五步,在底板上安装边缘环梁,在活塞板的中心位置搭建中心架,并在中心架上安装中心环梁,将边缘环梁与中心环梁通过环向横梁连接。第六步,将多根基柱安装在基础上。第七步,在每根基柱上吊装焊接立柱,多段立柱依次在竖直方向上进行焊接,同步安装壁板和提升柜顶。第八步,安装工艺设备。第九步,安装密封膜,并将密封膜固定在活塞板上。第十步,对立式气柜进行试验。该施工方法利用立柱和柜顶形成工装,充分利用资源,施工效率高。(The application provides a construction method of a dry-type gas holder, and relates to the technical field of gas storage. The construction method comprises the following steps: first, find the basic center point. And secondly, laying a bottom plate. And thirdly, mounting a piston plate, a piston support and a piston surrounding ring on the bottom plate. And fourthly, pouring in the piston surrounding ring. Fifthly, installing an edge ring beam on the bottom plate, building a center frame at the center position of the piston plate, installing a center ring beam on the center frame, and connecting the edge ring beam with the center ring beam through a circumferential cross beam. And sixthly, mounting a plurality of foundation columns on the foundation. And seventhly, hoisting and welding stand columns on each foundation column, sequentially welding the multiple sections of stand columns in the vertical direction, and synchronously installing the wall plates and lifting the cabinet top. And eighthly, mounting process equipment. And step nine, mounting the sealing membrane and fixing the sealing membrane on the piston plate. And step ten, testing the vertical gas holder. The construction method utilizes the upright posts and the cabinet top to form the tool, fully utilizes resources and has high construction efficiency.)

1. A construction method of a dry gas holder is characterized by comprising the following steps:

firstly, measuring whether the outline dimension of a foundation meets the requirement or not, and finding out a foundation central point;

secondly, laying a key board according to the central point and the basic datum line, and laying a bottom board by taking the key board as a reference;

thirdly, a piston plate, a piston support and a piston surrounding ring are arranged on the bottom plate;

fourthly, pouring concrete in the piston surrounding ring according to the amount;

fifthly, mounting an edge ring beam on the bottom plate, building a center frame at the center position of the piston plate, mounting a center ring beam on the center frame, and connecting the edge ring beam with the center ring beam through a ring-shaped cross beam;

sixthly, forming a plurality of through holes on the bottom plate, and mounting a plurality of foundation columns on a foundation through the corresponding through holes;

seventhly, hoisting and welding stand columns on each foundation column, sequentially welding a plurality of sections of stand columns in the vertical direction, and synchronously installing a wall plate and lifting a cabinet top after welding one stand column each time;

eighthly, mounting process equipment in the dry-type gas holder;

a ninth step of mounting a sealing film between the piston plate and the wall plate, and fixing the sealing film to the piston plate;

and step ten, testing the vertical gas holder.

2. The method of constructing a dry gas cabinet according to claim 1, wherein a plurality of lifting mechanisms are used in the seventh step, each of the lifting mechanisms is connected to the top of the cabinet inside the cabinet, each of the lifting mechanisms is connected to a panel welding platform outside the cabinet, an upper portion of the lifting mechanism is connected to the installation welding platform of the column, and the lifting mechanism lifts the panel welding platform and the top of the cabinet according to the progress of welding of the column.

3. The method of constructing a dry gas holder according to claim 2, wherein in the seventh step, the dry gas holder is stopped after every predetermined lifting distance, the balance of the top of the holder, the gap between the wall plates, and the condition of the lifting equipment are checked, and the lifting is continued after the reliability is confirmed.

4. The method of constructing a dry gas holder according to claim 3, wherein in the seventh step, after the vertical columns and the wall plates are completely installed, the top of the dry gas holder is lifted one time at last, the top of the dry gas holder reaches a designed elevation, the lifting mechanisms are adjusted one by one to make the overall levelness of the top of the dry gas holder meet the designed requirement, and then the top of the dry gas holder is fixedly connected with the vertical columns.

5. The method of claim 4, wherein in the seventh step, after the top of the cabinet is fixed to the vertical column, the lifting mechanism is removed, the vertical column with an excessive height is cut off, and the top ring plate is installed.

6. The construction method of a dry gas holder according to claim 1, wherein in the fourth step, it is confirmed that there is no welding omission before casting, and it is checked whether the accumulated water discharge pipe at the upper part of the piston plate is buried and welded as designed; whether the flange of the piston support sleeve is blocked or not is judged, and a pouring height mark is made on the inner frame plate and the outer frame plate.

7. The method of constructing a dry gas holder according to claim 6, wherein in the seventh step, the concrete is compacted sufficiently during casting, the surface is leveled according to the height mark, the concrete is cast quantitatively, and after the casting is completed, the concrete scattered around the concrete is cleaned.

8. The construction method of the dry gas holder according to claim 1, wherein the ninth step comprises a lifting step and an installation step, wherein the lifting step comprises lifting the unfolded sealing film to make the sealing film slowly cylindrical, then uniformly correcting the lifting height to ensure the upper end of the sealing film to be horizontal, and then synchronously lifting to make the sealing film rise at a constant speed, and entering the installation step when the sealing film is close to the installation position; in the mounting step, each piece of hoisting equipment is operated, mounting height is adjusted, sealing plaster is attached to a mounting surface, the mounting surface is fixed by a sealing piece and a bolt, the bolt is mounted from the upper part of the piston plate, and after the upper part is mounted and cleaned, the lower part of the piston plate is mounted.

9. The construction method of the dry gas holder according to claim 8, wherein the ninth step comprises a box opening step of disassembling the whole package box from the top plate of the package box, and a lifting preparation step of carrying out the box material in time after the box opening is completed, and carefully cleaning the broken pieces and impurities scattered during the box opening; and then, carrying out the lifting preparation step, wherein in the lifting preparation step, lifting equipment for lifting the sealing membrane is arranged on the lighting hole at the top of the gas holder, a rigging is placed on the piston plate from the lighting hole at the top of the gas holder, each lighting hole is numbered, the sealing membrane is unfolded, the lifting equipment is connected with a lifting point of the sealing membrane, and then the lifting step is carried out.

10. The method of constructing a dry gas holder according to claim 9, wherein the step of opening the gas holder is performed by removing foreign materials on the piston plate in the holder, cleaning the foreign materials, checking whether there is any weld, burr, or damage to the sealing film on the piston plate, and after confirming that there is no error, transferring the entire sealing film into the holder.

Technical Field

The application relates to the technical field of gas storage, in particular to a construction method of a dry gas holder.

Background

The gas holder is a large gas storage tank, is formed by welding steel materials, and is widely applied to storage of oil refineries, chemical gases, city gases and the like. The dry type gas holder construction method in the prior art has low efficiency.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method for constructing a dry gas holder, which aims to solve the problem of low efficiency of the dry gas holder construction method in the related art.

The embodiment of the application provides a construction method of a dry-type gas holder, which comprises the following steps: firstly, measuring whether the basic outline dimension meets the requirement or not, and finding out a basic central point. And secondly, laying a key board according to the central point and the basic datum line, and laying a bottom board by taking the key board as a reference. And thirdly, mounting a piston plate, a piston support and a piston surrounding ring on the bottom plate. And fourthly, pouring concrete in the piston surrounding ring according to the amount. And fifthly, mounting an edge ring beam on the bottom plate. A center frame is built at the center of the piston plate, and a center ring beam is arranged on the center frame. And connecting the edge ring beam with the central ring beam through the annular cross beam. And sixthly, forming a plurality of through holes on the bottom plate, and installing a plurality of foundation columns on the foundation through the corresponding through holes. And seventhly, hoisting and welding stand columns on each foundation column, and sequentially welding the multiple sections of stand columns in the vertical direction. After welding one stand column each time, the wall plate and the lifting cabinet top are synchronously installed. And step eight, installing process equipment in the dry gas holder. And step nine, installing a sealing film between the piston plate and the wall plate, and fixing the sealing film on the piston plate. And step ten, testing the vertical gas holder.

In the construction method of the dry-type gas holder, the basic shape is measured first, and the basic shape is ensured to meet the requirement. The quality of foundation engineering can directly influence the quality of installation engineering, so the overall dimension of the foundation must be strictly controlled. After the central point is found out, the key board is laid by using the central point and the basic datum line, and the bottom board is laid by using the key board as a reference. By adopting the mode, the bottom plate laying quality can be improved, and the subsequent installation precision is ensured. After the piston plate, the piston support and the piston surrounding ring are installed on the bottom plate, concrete is poured in the piston surrounding ring according to the amount. In the casting, the concrete is cast in a predetermined amount, and the weight of the concrete is used as a balance. After that, the edge ring beam is mounted on the base plate. A center frame is built at the center of the piston plate, and a center ring beam is arranged on the center frame. And connecting the edge ring beam with the central ring beam through the annular cross beam. A plurality of through holes are formed in the bottom plate, and a plurality of foundation columns are installed on the foundation through the corresponding through holes. The accuracy and reliability of the installation of the foundation column are ensured. And hoisting and welding the stand columns on each foundation column, and sequentially welding the multiple sections of stand columns in the vertical direction. After welding one stand column each time, the wall plate and the lifting cabinet top are synchronously installed. Utilize stand and cabinet top body to form the frock, effectively utilized the resource of cabinet top body, saved a large amount of engineering construction expenses, promoted the efficiency of construction. Thereafter, the process equipment is installed in the dry gas cabinet. A sealing membrane is mounted between the piston plate and the wall plate and is fixed to the piston plate. And finally, testing the vertical gas holder. The construction method of the dry gas holder is safe and reliable, low in cost investment and high in construction efficiency.

As an alternative solution to the embodiment of the present application, in the seventh step, a plurality of lifting mechanisms are used. Each lifting mechanism is connected with the cabinet top in the cabinet, each lifting mechanism is connected with a wallboard welding platform outside the cabinet, and the upper part of each lifting mechanism is connected with the installation welding platform of the stand column. Along with the welding progress of the stand column, the lifting mechanism lifts the wallboard welding platform and the cabinet top. The wallboard welding platform, the mounting welding platform of the upright post and the cabinet top are connected into a whole through the lifting mechanism, and synchronous lifting construction is carried out. Collect column mouting welding, wallboard erection welding, inside and outside polish, rust cleaning mopping and cabinet top promote in an organic whole, can also the effective control stand incline simultaneously to it links to each other inside and outside to form one, and whole steady, safe and reliable's installation and welding do not influence each other's working face. And when the lifting is stopped, the movable tool can be firmly hung on the hook, and meanwhile, the plurality of lifting mechanisms are stressed in a balanced manner, so that double insurance is formed.

As an optional technical scheme of the embodiment of the application, the lifting is stopped once after the preset distance is lifted, the balance of the cabinet top, the gap of the wall plate and the condition of lifting equipment are checked, and the lifting is continued after the reliability is confirmed. When the cabinet top is lifted, the balance of the cabinet top, the gap of the wall plates and the condition of lifting equipment need to be checked every time the preset distance is lifted, so that the construction quality and the construction safety are ensured.

As an optional technical scheme of this application embodiment, in the seventh step, treat that stand and wallboard are all installed the back, promote the cabinet top once at last, the cabinet top reaches the design elevation, adjust hoist mechanism one by one again, make the whole levelness of cabinet top satisfy the design requirement, then with cabinet top and stand fixed connection. After the last step of lifting, the lifting mechanism needs to be adjusted, so that the levelness of the cabinet top meets the design requirement, the construction quality is guaranteed, and then the cabinet top and the stand column are fixed.

As an optional technical scheme of the embodiment of the application, in the seventh step, after the cabinet top is fixed with the stand column, the lifting mechanism is removed, the stand column with redundant height is cut off, and the ring plate at the side of the cabinet top is laid and installed. When the cabinet top is lifted, in order to ensure that the cabinet top can reach the designed elevation, the height of the upright post is set to be higher than the design requirement. After the cabinet top is fixed, the redundant part of the height of the upright post is cut off.

As an alternative solution to the embodiment of the present application, in the fourth step, a welding omission-free part is confirmed before casting, and whether the accumulated water discharge pipe on the upper part of the piston plate is buried and welded as designed is checked. Whether the flange of the piston support sleeve is blocked or not is judged, and a pouring height mark is made on the inner frame plate and the outer frame plate. The method is characterized in that a welding omission-free part is confirmed before pouring, whether a water accumulation discharge pipe on the upper part of a piston plate is buried and welded according to design or not is checked, and whether the flange of a piston support sleeve is blocked or not is checked, so that the pouring quality is ensured. And the inner frame plate and the outer frame plate are marked with pouring heights, so that the pouring heights can meet the requirements when pouring is facilitated.

As an optional technical solution in the embodiment of the present application, in the seventh step, the concrete is fully compacted during the pouring, the surface is leveled according to the height mark, the concrete is poured according to the amount, and after the pouring is completed, the concrete scattered around the concrete is cleaned. And pouring is carried out according to the set concrete amount, and the weight of the concrete is used as balance, so that the construction material is saved, and the construction efficiency is improved.

As an optional technical solution of the embodiment of the present application, in the ninth step, the method includes steps of lifting and installing. In the lifting step, the unfolded sealing film is lifted firstly to form the sealing film into a cylinder shape slowly, and then the lifting height is uniformly corrected to ensure the upper end of the sealing film to be horizontal. And then synchronously hoisting to enable the sealing film to rise at a constant speed, and entering the mounting step when the sealing film is close to the mounting position. In the installation step, each hoisting device is operated to adjust the installation height. And then, attaching sealing plaster to the mounting surface, and fixing the sealing plaster by using a sealing piece and a bolt. Firstly, the bolt is installed from the upper part of the piston plate, and the upper part is installed. After cleaning, the lower part of the piston plate is mounted. By adopting the hoisting step and the mounting step, the sealing film can be conveniently conveyed between the piston plate and the wall plate, and can be conveniently fixed on the piston plate.

As an optional technical scheme of the embodiment of the application, in the ninth step, the method comprises the steps of unpacking and preparing for hoisting. In the unpacking step, the whole packing box is disassembled from the top plate of the packing box, and after unpacking is finished, the box material is timely carried out, and the scattered fragment sundries are carefully cleaned when unpacking. And then, carrying out a lifting preparation step, wherein in the lifting preparation step, lifting equipment for lifting the sealing membrane is arranged on the lighting hole at the top of the gas holder, and the rigging is placed on the piston plate from the lighting hole at the top of the gas holder. Numbering each lighting hole, expanding the sealing film, connecting the hoisting equipment with the hoisting point of the sealing film, and then entering a hoisting step. The packing box is disassembled from the top plate of the packing box, and the packing box is opened, so that the sealing film is prevented from being damaged. Each lighting hole is numbered, so that the hoisting is correctly commanded when in hoisting.

As an optional technical scheme of the embodiment of the application, before the step of unpacking, sundries on a piston plate in the cabinet are firstly removed, the cabinet is cleaned, and whether a crater and burrs exist on a piston bottom plate or not and the sealing film is damaged are checked. And after the seal film is confirmed to be correct, the whole box of seal film is transported into the cabinet, and the box opening step is carried out in the cabinet. Before opening the box, need clean the cabinet in, prevent to damage the seal membrane. The sealing film is not easy to be damaged by opening the box in the cabinet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a flowchart of a construction method of a dry type vertical cabinet according to an embodiment of the present application;

FIG. 2 is a schematic layout of a keypad provided in an embodiment of the present application;

FIG. 3 is a schematic view of an edge ring plate according to an embodiment of the present disclosure;

fig. 4 is a schematic view of welding a ring plate according to an embodiment of the present application.

Icon: 110-a central keypad; 120-four-heart-based keypad; 210-outer ring plates; 220-a first plate body; 221-a stop block; 230-a second plate body; 310-a first annular plate; 320-a second annular plate; 330-third annular plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.